Preparation and characterization of chitosan/cashew gum beads loaded with Lippia sidoides essential oil

Nanotechnology offers immense opportunities for improvement in the quality of life through applications in agriculture and the food systems. Development of nanotechnology-based novel agro-products, viz., nanosensors, nano-fertilizers, nano-pesticides and nanoformulations of biocontrol agents, is currently a subject of intense investigation. A variety of nanomaterials has been recommended for use in agriculture, in order to help reduce the consumption of agrochemicals by use of smart delivery systems, minimize the nutrient losses and increase the yield through optimized water and nutrients management. Nanotechnology-derived devices have also been explored in the areas of plant breeding and genetics. Additionally, the agricultural products and/or by-products can be utilized as a source for developing bio-nanocomposites. Nevertheless, the potential advantages of nanotechnology applications in the agricultural sector are still marginal, and have not been commercialized to a signifi cant extent, as compared to other industrial sectors. Researches in the area of agricultural nanotechnology are being extensively pursued in quest for the solutions to the agricultural and environmental challenges, such as sustainability, increased productivity, disease management and crop protection through innovative techniques for monitoring, assessing and controlling the agricultural practices. This chapter provides a basic knowledge about the role of nanotechnology in developing sustainable agriculture and environment, and eventually in the welfare of human society, at large, in the near future.

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“…They can signifi cantly improve the loading and release profi les and avoid the occurrence of bursts or potential leaks (Paula et al 2011 ).…”

Section: Nanogelsmentioning

confidence: 99%

Understanding the Role of Nanomaterials in Agriculture

Dwivedi

Saquib

Al‐Khedhairy

et al. 2016

Microbial Inoculants in Sustainable Agricultural Productivity

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“…A new area of study that focuses on the use of biopolymers for encapsulation of essential oils has been developed (Paula et al 2011). Chitosan is a biopolymer that is suitable for biomedical applications such as encapsulation matrices due to its low toxicity and excellent biodegradability (Balan & Verestiuc 2014).…”

Section: Discussionmentioning

confidence: 99%

“…The preparation of chitosan-based nanoemulsions for encapsulating volatile compounds has been proposed to promote active protection and to maximize the biological effects of essential oils (Paula et al 2011). Nanoemulsions are versatile and can be prepared via numerous different aqueous solutions, surfactants and oil constitutes (Underwood & Van Eps 2012).…”

Section: Discussionmentioning

confidence: 99%

The use of Eucalyptus staigeriana nanoemulsion for control of sheep haemonchosis

et al. 2017

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Sustainable control of gastrointestinal nematodes (GIN) in small ruminants has been based on the use of alternative methods, including targeted selective treatment, such as FAMACHA. Another GIN control alternative is the use of herbal medicines, although in many cases their use is based on empirical knowledge. Biopolymer nanoformulations has been investigated to maximize the essential oil effects against sheep gastrointestinal nematodes. The aim of the present study was to combine a Eucalyptus staigeriana essential oil nanoemulsion (EsNano) with FAMACHA as an alternative control for sheep haemonchosis. The study was performed over six months at a commercial sheep farm located in a semiarid region of Northeast Brazil. Initially, a fecal egg count reduction test (FECRT) in sheep with levamisole, ivermectin and oxfendazole in sheep was performed used to determine the most effective anthelmintic to use as the positive control. Levamisole has been selected because it showed efficacy superior to 95%. EsNano was obtained and then its physicochemical properties were characterized. The average (±SE) size of the particles in the nanoemulsion was 276.8 (±12.3) nm with bimodal distribution and polydispersity. Nine visits were performed, from April to September 2013, with an interval of 17 days. One hundred sixty-two male and female sheep were divided into three groups (n=54 each) and were treated when FAMACHA score was 3, 4, or 5: G-EsNano 250mg kg -1 EsNano; G-Lev 7.5mg kg -1 levamisole (positive control), and G-Neg was not treated (negative control). Feces from sheep were collected to quantify the number of eggs per gram of feces (epg) and to identify nematode genera. Sheep weight gain was monitored. The epg data for each group and the average sheep weight gains were analyzed by variance analysis and compared with the Tukey's test (P<0.05). Significant difference between the number of animals treated with EsNano and levamisole was not observed in any visit (P>0.05). The epg variation was similar in the G-EsNano and G-Lev groups on visits (P>0.05), except the second and fifth evaluation in the epg groups were significantly different (P<0.05). Haemonchus spp. was the most prevalent nematode. There was no significant weight gain in any of the treated groups (P<0.05). The combination of phytotherapy and FAMACHA can be an alternative to minimize the use of synthetic anthelmintics to control resistant GIN populations of small ruminants.

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“…Another set of single-shell MF microcapsules loaded fragrance was prepared in the similar manner using various volumes of fragrance (5,10,15,20,25, 30, 35 and 40 ml) in SDS solution of 5 % w/v.…”

Section: B Preparation Of Single-shell Melamine-formaldehyde (Mf) MImentioning

confidence: 99%

“…Encapsulation of active ingredients, including flavors in polymer shell of urea-formaldehyde [1]- [4] and melamine-formaldehyde has been versatile [5]- [8]. Control of fragrance diffusion by barrier system of various types has been employed in fragrance prolongation, for instance, cyclodextrin host [9]- [10], solid-lipid nanoparticles [11], amphiphilic-crosslinked polymer network [12], double emulsion system [13], synthetic polymers formed by miniemulsion polymerization [14], coacervation with various carbohydrates [15]- [17], polymer blends [18] and multilayer microcapsules [19]. However, increasing in capacity of fragrance in urea-formaldehyde and melamine-formaldehyde is necessary to prolong the release period.…”

Section: Introductionmentioning

confidence: 99%

Influence of Shell Number on Loading Capacity of Microcapsules Containing Fragrance

Aldred¹,

Chokbundit²,

Saengsorn³

2017

IJCEA

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Abstract-Microcapsules of single-shell melamine-formaldehyde (MF) and double-shell urea-formaldehyde/melamine -formaldehyde (UF/MF) microcapsules loading with fragrance of varied concentrations were prepared using in situ polymerization. The microcapsules were analyzed using Scanning electron microscope (SEM) and Fourier transform infrared spectrometer (FT-IR). Loading capacity of fragrance in the microcapsules in term of percent weight of fragrance was determined using soxhlet extraction. From SEM images, shapes and sizes of single shell MF microcapsules were different depending on concentrations of fragrance and SDS added in the preparation procedure. FT-IR spectra of double-shell UF/MF microcapsules loaded fragrance presented absorption band of C=O at 1674 cm -1 as found in that of fragrance. Percent weight of fragrance in single-shell UF and double-shell UF/MF microcapsules substantially increased with increased concentration of fragrance. Additionally, loading capacity of fragrance in double-shell UF/MF microcapsules were higher than those in single-shell MF microcapsules at the same concentration of fragrance. This would lead to higher prolongation of fragrance release from double-shell UF/MF microcapsules than single-shell MF microcapsules and fulfill the end use applications.

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Preparation and characterization of chitosan/cashew gum beads loaded with Lippia sidoides essential oil

Cited by 120 publications

References 28 publications

Understanding the Role of Nanomaterials in Agriculture

Understanding the Role of Nanomaterials in Agriculture

The use of Eucalyptus staigeriana nanoemulsion for control of sheep haemonchosis

Influence of Shell Number on Loading Capacity of Microcapsules Containing Fragrance

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